Machine for forming poles, piles, and pipes of plastic material.



4 R. M. JONES. MACHINE FOR FORMING POLES, FILES, AND PIPES OF PLASTIG MATERIAL.

APPLICATION FILED JULY 16, 1912.

1,064,741 Patented June 17, 1913.

2 SHEETS-SHEET 1.

R; M. JDNBS.

MACHINE FOR FORMING POLES, FILES, AND PIPES or PLASTIC MATERIAL.

APPLICATION FILED JULY 16, 1912.

Patented June 17, 1913.

2 SHEETEYSHEET Z.

WI TNESSES.

Z Wiw ROBERT M. JONES, 0F DENVER; COLORADO MACHINE FOR FORMING POLESQPILES, AND PIPES OI PLASTIC MATERIAL.

Specification of Letters Patent.

Patented June 17, 191 3.

Application filed m 16, 1912. Sex-1:1 m). 169,508.

To all whom it may concern Be it known that I, ROBERT M. Jones, a citizen of the United States, residing at Denver, in the county of Denver and, State of Colorado,',have invented certain new and useful Improvements in Machines for Forming Poles, Piles, and Pipes of Plastic-Material, of which the following is a specification.

My invention relates to machines for constructin poles, piles, pipes and other similar artic es, of concrete or other plastic maplast c material has hardened is removed.

attain this object by the mec anism illustrated in the accompanying drawings in the various views of which like arts are similarly designated, an%in whic Figure '1 represenan end elevation of the machine with the foundation upon which it is supported shown in section, Fig. 2, a plan view of themachine drawn tosa reduced scaleflmd. Fig. 3, a side elevation of the'same.

The machine is preferably installed upon a foundation 19 composed of stone, concrete or other suitable material and provided with parallel trencl1es-,14 for the admission of the weighted ends of a blanket 2 which forms art of the construction, as will hereinafter e described. 'lhe operating parts of the machine are' mlmnted u on a basecomposed of two sec tions A um 15 which are supported upon the foundation beyond the opposite ends of the twotrenches 14. Each base section consists of two pairs of parallel I beams 9 and 13,

"one of which is placed transversely upon the other and secured there by bolts or rivets. Mounted 'uion the pper pairs of beams of the two ase sections are double bearings 6 for the supportof two rollers 4 which in the 'operatipnprovide a rolling sup ort for' the body '0 plastic material whi e it is being shaped into the desired form. The bearings 6 arefastened upon the base sections by means of stud bolts 16 and they inay be raised'or lowered for the purpose of adjusti n the position of the rollers, by means 6 wedge-she ed liners 17 which are interposed between t e bearings'and the upper surfaces of the beams 9.

Articulatel connectedwith the base sections b means of nuckles 11 and 10 are two pairs 0 rocker arms 8 which at their upper extremities carry bearings 20 for the support of two rollers 3, which by means of cranks l apnliedto their shafts are in the operation of the machine rotated in the same direc tion. The rollers 3 are yieldingly held in their normal position at substantially ual distances from a vertical plane exten ing intermediate of the rollers 4, by means of pneumatic springs which are provided by oscillating cylinders 7 which are connected at opposite sides of the standards of the bearings 6, and pistons 24 which are movably fitted in the said cylinders and pivotally connected with the respective rocker arms means of sleey'sqw" Thecylinders 7 are iy means of pi es '22- QODBBOtSd at their opposite ends wit 1 a thmeway valve 25 adapted to place either end of the cylindcrs in communicationwith a source of air under compression. During the operation of the machine, the air pressing upon the outer surfaces of the two pistons 24, pro vides the pneumatic springs which by opposing the outward movement of the rollers 3, exert a ressure upon the body of plastic material p aced between them, and by introducing the air into the cylinders at the inner sides of the pistons, the latter are moved outwardly to separate the rollers 3 for the purpose of removing the finished product, as will hereinafter be more fully described. Stops 5 are secured to the bearings 6 to limit the outward movement of the rocker arms, the extreme positions of which have been shown in broken lines in Fig. 1 of the drawings. a 4 I Loosely supported upon the rollers 3 is the blanket 2, the end portions of which hang over the outer sides of the same and i are provided at 'theirqlpp'er edges with f weights 15 which in the operation, serve to impart the required tension to the blanket.

In the construction shown in the draw ings, the several rollers 4: and flare of tapering form and their longitudinal axes eonverge toward a point in the vertical plane extending intermediate of the rollers of the two pairs. As a result of this arrangement.

and construction, a body of plastic material disposed upon the blanket between the rollers 3 will when the said rollers are rotated, assume a form which tapers in accordance with the angle'ot convergence of the same and it will beunderstood without further illustration that to form an article of cylindrical shape, the various rollers comprised in the machine must be made cylindrical and arranged in parallel relation to each other.

A platform 1'21 shown in Figs. 1 and 72 of the drawings, is provided tosnpport the material before it fed onto the blanket, as well as the finished product after "it is discharged from the same, and it will be understood that while two cranks have been shown as the simplest medium for imparting motion to the rollers 3, other means may he employed in case it is desired to operate the machine by power.

Having thus described the mechanical construction of the machine, its operation will be readily understood. The plastic material of which the article is to be composed is together with a suitable mandrel 23 to which, if so desired, the reinforcements to be embedded in the product, may be fastened, is placed in the sag of the belt between the rollers 53 and upon the rollers 4 after which the rollers 3 are rotated in the same direction. The consequent longitudinal movement of the blanket and the pressure exerted by the air-cushions in the cylinders 7 upon the body of plastic material through the medium of the. rollers 3 will cause the said body to assume a eonoidal shape around the mandrel. After one end of the belt has been lowered into the corresponding trench 14 of the foundation 9, as far as is advisable, the rollers are rotated in the opposite direction and the movement of the blanket is in consequence' reversed and the body of plastic ma terial is thus together with the mandrel, rolled back and forth between the rollers 53 and upon the rollers 4 until it has acquired the desired form. To discharge the product from the machine compressed air is introduced through the pipes '22 into the inner ends of the cylinders 7 to cause by pressure upon the respective pistons,the two rollers 3 to separate until the portion of the belt upon which the finished product is supported, extends level with the upper surfaces of the rollers, when the product is moved onto the platform-2i where it remains until it has hardened, after which the mandrel around which itis formed is removed.

It wil be understood that to succe sfully operate tae machine, it is necessary that the distance between the rollers 3 is at any point less than the diameter at the corresponding point of the pole, pile or pipe formed between them.

Ha ring thus described my invcnth u what I claimand desire to secure by Letters Patent is:

1. A machine of the class described coinprising a pair of rotary rellers placed in spaced relation to each other, a blanket loosely support ed thereon, and a support for the gag of said blanket behveen said rollers.

22. A machine of the cla.-s described comprising a pair of rotary rollers placed in spaced relation to each other, -a blanket looselysupported thereon, and a rolling sill)- poi't for the sag of aid blanket between said rollers.

3. A machine o the class described comprisin a pair of rotary roller laterally, movably mounted in spaced relation to each other, a blanket loosely supported thereon. and menus to yieldingly oppose a lateral movement of said rollers.

4. A machine of the class deseribed comprising a pair of rotary rollers laterally movably mounted in'spaeed relation to each other, a blanket loosely supported thereon. and meansnormally, yieldingly opposing a lateral movement of said rollers and adapted to separate the same to increase the distance between them, by moving them simultaneously in opposite directions.

A machine of the class described coin-- prising a pair of rollers in spaced relation to each other, oscillatory hearings in which said rollers are rotatably mounted, a blanket loosely supported pn said rollers, and means to yioldingly oppose a movement of said bearings about their axes of oscillation.

In testimony whereof [have vaffixed my signature in presence of two witnesses.

ROBERT M. JUN ES.

WVitnesses I). J. ROXJANDET, F. H. CUM). 

